The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1993
Filed:
Dec. 14, 1992
Applicant:
Inventor:
Alison A Fleming, Mohegan Lake, NY (US);
Assignee:
Akzo nv, Arnhem, NL;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558346 ;
Abstract
The bisulfite adduct of a carbonyl compound, amine, and alkali metal cyanide are reacted in aqueous media to form an organic layer containing the desired .alpha.-aminonitrile product and an aqueous layer containing alkali metal sulfite. The aqueous layer, after separation from the organic layer, can be used as the reaction medium in a fresh reaction of bisulfite adduct, amine and alkali metal cyanide after its pH has been adjusted to the moderately acidic range, e.g., a pH of about 4 to about 5.